Cutting attachment for veneer-machines



No. s|,362. Patented Aug. 27, 190|, w. w. woon.

CUTTING ATTACHMENT FR VENEER HACHINES.

(Applicmn med sept, 5, 1900.)

2 Sheets-Sheet l.

(No Model.)

No. 68|,362. Patented Aug. 277 |90l.

W. W. WOOD. 4

GUTTING-ATTACHHENT F08 VENEER MACHINES.

y (Application tiled Sept. 5, 1900.)

2 Sheets-Sheet 2.

(No Model.)

. N lityllf AN.

IHI.I

IIIIIII whjesses l yss UNITED STATES WILLIAM WALLACE WOOD, OF TAOOMA, VASHINGTON.

CUTTING ATTACHMENT FOR VENEER-MCHINES SPECIFICATION forining part of Letters Patent No. 681,362, dated .August 27,

Application filed September 5, 1900. Serial No. 29,082. (No model.)

To all whom t may concern.'

Beit known that I, WILLIAM WALLACE WOOD, a citizen of the United States, residingat Tacoma, in the county of Pierce and State of Washington, have invented a new and useful Cutting Attachment for Veneer- Machines, of which the following is a speciiication.

This invention relates to veneer-machines, and has for its object to provide an improved cutter attachment therefor for cutting the strip of veneer into Widths and also to provide for adjusting the device so as to cut the strip of veneer into dierent widths. It is furthermore designed to preserve a constant relation between the motion of the means for feeding the strip of veneer tothe cutting apparatus and the motion of the revolving log from which the veneer is being stripped, so that the cutting apparatus maynot be choked and the veneer maybe properly fed from the log to the knife-blade.

With these andl other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the acy'companyingdrawings,and particularly pointed o'ut in the appended claims, it being understood that changes in the form, proportion, size, and minor detailsv may'be made within the scope of the claims Without departing from the-spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is a perspective view of the present form of veneer-cutting attachment. Fig, 2 isa longitudinal sectional elevation thereof. lFig. 3 is a detail sectional View illustrating the mounting of one of the friction-wheels of the cutting apparatus. Fig. 4 is a detail front elevation of the cutting-knife and knife-bar.

Corresponding parts are designated by like characters of reference in allof the figures of the drawings.

Referring to the drawings, l designates the usual knife-.bar of any ordinary'vencer-machine, and 2 the stripping-knife secured thereto and designed to strip a thin sheet of veneer from the surface of a log 3, which is revolved by the machine and against the knifeblade in any common or preferred manner.

In carrying out the present inventiop there are provided the opposite sills 4' 'and 5, which are secured to the knife-bar 1 and project outwardly at substantially right angles thereto at opposite ends of the knife. The outer ends of these sills areV connected by a crossbar 6, which-forms a cutting-.block for the trimming-knife and also completes the frame of the cutting attachment. Rising from the The drive-shaft 10 is operated from the revolving log by means of an endless belt 13, which is carried by a pulley-frame comprising the opposite frame-bars l4,c'arrying the pulleys ll5 and 16 at opposite ends thereof, and over which the belt travels. The inner pulley 16 is preferably smaller than the outer pulley 15 and is fixed toan intermediate portion of the drive-shaft, while the outer pulley Y l and the under portion of the belt rest upon the upper 'side of the log, the frame'being long enough for the pulley l5 to reach beyond the vertical axis of the log, as best shown in Fig. 2 of the drawings, so that the belt may have-a Vpositive frictional engagement with the log. By this means the drive-shaft will have a speed which bears a constant relation to the speed of the revolving log from which the veneer is being stripped.

As the veneer is stripped from the log by means of the knife 2 it sheet 17, which is secured to the topsof the sills and both knife-bars, so as to form a top or platform for the frame of the cutter apparatus. The strip of veneer is fed over `this platform by means of an endless apron or belt 1S, which is mounted upon theopposite rolls 19 and 20, located at the back. and front of the frame and immediately above the platform. The roller 19 is located adjacent to tile veneer-stripping knife, so that the veneer may be received beneath the apron just as soon as it comes from the knife, and a suitable guard 21 is carried by the frame and prdis fed across a zinc IOO 6o outer ends of the sillsand-at opposited ends Y drive-belt 22, running over one end of the roller 20, and a suitable pulley 23, fixed upon the drive-shaft. It will thus be seen that the veneer will be fed from the log at the same rate as it is cut therefrom, and thus preventI choking of the knife. It will lie observed that the louter end of the feed-belt terminates at or adjacent to the "inner-.edge of the transverse knife-block 6,

and it is designed to out the veneer as it leaves the belt by means of a vertically-reciprocating knife-blade 24:,thatextends trans- 'versely between the opposite standards 7 and 8 and is carried by a bar 25, the opposite ends of which `are provided with longitudinallyextended guide-arms 2li, which are slidable vertically in suitable slots formed in the respective standards. Pendent from intermediate portions of tlieguide-arms are the studs 'or pins 27,v which tit into helical springs 28,

that bear in opposite directions against the arms and the respective sills 4 and 5, so as to normally elevate the knife and automatically throw the latter" upwardly after a downward movement thereof. The upper edge of lthe knife-bar 25 is provided with theopposite upwardly and forwardly disposed tappet-arlns 29, which are arranged for engagement with the tappet-wheels 30, carried* by the knifeshaftll.

Each. tappet-wheel is formed by a pair of spaced disks, which are connected by -a plurality of transverse pins, upon which are mounted aptifriction-rollcrs 131 to strike the upper ends of the tappeti-arms, and thereby successively throw the knife-bardownwardly, and thereliy cut the strip of veneer into sections.

The knife shaft or tappet-sh'aft is driven from the f lrive-shaft l() through the medium of thel oppositelydisposed frictiondisks and 3T3, fixed against rotation upon the shafts 10 and 12, respectively, and keyed thereon for longitudinal adj` ustnieut. `These disks are located between the pulley 1G and the standard 8, and theirhubs Ill are exlended outwardly toward the Vstanda'rd and provided with circumferentialgrooves for thc,r ccpiion of the opposite ends of suitable yekes 35, which are carried by the adjusting rods 36. 'lhe outer end of each adj ust ing-rod is screwlhrcaded and proiects through the adjacent standard,andasuitablcadjnstinghand-wheel 37 is-iitted lto the projecting end of the rod, whcrcbythe disk maybe adjusted' longitudinally u'pon the shaft.l interposed between the pcripheries of thc disks and 553 isa horizontally-disposed disk liti, the upper and lower facesI of which are in frictional contact with the said disks. As best shown in Fig.

seneca El of the drawings, this horizontal disk is mounted loosely upon a vertical fixed shaft 39, the oppositev ends of which are provided with be'aring-boxesddand 41 to embrace the respective shafts 10 and 12, and each box is provided with a set-screw 42 to engage with l 4In the operation of the device nthelogis turned by the veneer-machine, upon which it is mountedfso as to strip the veneer from the log, from which it'will be directed onto the platform 17 and beneath the feed belt or apron 18 by means of the guide 21. The apron feeds the veneer to the cutting-knife 24, which may be of any size and shape, accordingtthe pur-I pose for which the veneer strips are intended,

andthe knife is operated from the drive-shaft so as to reciprocate in a vertical direction to cut the veneer int/o sections. When it is desired to piace a new log in position, the pul-v ley-frame 14 is elevated upon the drive-shaf t as a center, sothat the outer free end thereof may not be in the way of the log.

What is claimed isl. In a veneermachine, the combination with a platform, of a stripping-knife mounted thereon, a euttingknife also mounted upon the platform; an endless feed device mounted above and adjacent to the platform with its under side traveling from the stripping-knife to the cuttingknife, the spaceh between thp under side of the feed device and theplat form being for the receptionof and also forming a guide for the strip-of veneer as it comes from the stripping-knife, and means for driving the feed device from the periphery of the log from which the veneer is being stripped.

2. ln a vencer-machine, tho combination with a platform, of astripping-knife mounted transversely of one end thereof, a verticallyreciprocate-ry cutting-knife mounted at the opposite end of the platform, an endless feed device mounted above and adjacent to th'e platform and located between the two knives., the under side of the feed device traveling from the stripping-knife to the cutting-knife, the space between the under side of the feed device and the platform boing for the reception of and also forminga guide'for the veneer as it comes from the stripping-knife, a guard carried by the platform and overhanging the stripping-knife and the adjacent end of the feed device, and means for driving thc fc`cd -devico from tho periphery of the log from which the venccr ist-being stripped.

E3.4 In a cuttingal l-,Lchment for veneer-stripping machines, tho combination of acntting-` knife, and a pcrlphcrally-contacting frictional log-engaging driving device therefor, comprising a frame having opposite rollers IOO :z inga platform, opposite u prights rising there- 5c and arranged for frictional contact with the tion of'the belt being flexible to conform te 6e combination with a cutting-knife, of a feed shaft in operative relation to the feed device, an intermediate shaft operatively connected tothe knife, opposite friction-disks carried by the respective shafts and also adjustable lonthe pulleys or rollers, one side of the belt at tion-disk having its opposite flat faces in frictional engagement with the peripheral edges of the other friction-disks.

8. In a device of` the class described, the 7o combination with a .cutting-knife,of a feed device, a drive-shaft, an intermediate shaft, opposite friction-disks mounted upon the re- `spective shafts and also adjustable longitudinally thereon, adjusting-rods connected to said disks, and provided with means for adjnstably moving the rods longitudinally, a fixed shaft, having opposite boxes embracing the respective drive and intermediate shafts,

a friction-disk mountedloosely upon the'xed z8o shaft and having its opposite flat faces in 4frictional engagement with the respective other disks, and an operative connection between the intermediate shaft and the knife.

eral edge of the log from whichthe veneer is being stripped, whereby the feed device is driven from and at a uniform speed with respect to the log, the log-engaging vportion rov of the belt being flexible to conform to the peripheral edge of the log, wherebfy the maximum frictional contact between the log and the belt is had.

' e. A device'of the class described, comprisx 5 ing a platform, opposite uprights rising therefrom, a vertically-recipi'ocatingcutting-knife mounted upon the nprights, a drive-shaft also mounted upon the. platform and operating 24o toward the knife, and a vertically-swinging peripherally-contacting log-engaging driving device pivotally connected tothe drive-shaft and extending above the platform;

- 5. A device of the class described, comprising a platform, standards rising from the from, a cutting-knife mountedto reciprocatevertically upon the uprights, a feedV device traveling- `toward the knife and -over the platform, a drive-shaftsupportedabove the feed 3o device and upon the `uprights, au operative connection between the` shaft and the feed device, anda vertically-swinging peripherally-contacting log-engaging' frictional driving device, having itsl upper end pivotally 55 connected to the drive-shaft and inclining down wardl y therefrom across the feed device. In acutting attachment for veneer-stripping machines, the combination with-a cutting-knife, of a drive-shaft in operative re- 4o lation thereto, and a peripherally-contacting frietional log-engaging driving device connected to the shaft, and comprising a frame pivotally supported at one end only upon theshaft, and having opposite terminal rollers, 45 one of which is fixed tothe shaft, and an endless belt traveling over the rollersan intermediate portion of the under side of the belt and adjacent to the outer free end of the framebeing disposed transversely across shafts are mounted upon the standards, an endless feed-apron traveling `over the platform and toward the knife, an. operative con-- nection between the drive-shaft and theapron,

drive-shaft and the log from which the veneer is to be stripped, an adjustable operative connection between the drive-shaft and the intermediate sl1 aft,and anoperative connection between the latter andthe knife-shaft. roo

l0. In a veneer-machine, the combination with means for rotatably 'supporting a log from which veneer is tol be stripped, and a stripping-knife, of a feed device to convey the Veneer from the knife, and means for driving the feed -device at a constant rate'with respect to the rotation of the log, and comprising an endless flexible belt disposed transversely across the location of the log and periphery of the log, there being means to automatically force the belt laterally toward and maintain the same in frictional contact with the log as it decreases in diameter,

In testimony that I claim the foregoing as my' own I have hereto affixed 1y signature in the presence of two witnesses.

WILLIAM NVALLACE WOOD.

Witnesses:

A. E. LAWRENCE, A. l. Turret'.

peripheral edge of the -log fromwhichl the veneer is being stripped, whereby the feed device is driven from and ata uniform speed andthe belt is had.

7. In a device of the class described, the

device for feeding veneer to the knife,a drive- 9. vA device of the class described, compris- 85,

a log-engaging driveconnection between the 95 I mounted Ifor frictional engagement with the r zo 

